package cn.pzh.cloud.filter;

import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.stereotype.Component;
import org.springframework.util.MultiValueMap;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

/**
 * 用户认证
 */
@Order(1)
@Component
public class AuthorizedFilter implements GlobalFilter {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        MultiValueMap<String, String> queryParams = request.getQueryParams();
        String author = queryParams.getFirst("author");
        if ("admin".equals(author)){
            //放行
            return chain.filter(exchange);
        }
        else{
            //认证不通过
            System.out.println("fail----------------------------------------");
            exchange.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED);
            return exchange.getResponse().setComplete();//拦截
        }
    }
}
